you can download from here

or is it possible to use OR in dependency tag of manifest.xml file?

Download

Changes:
- extension is now using jquery (you should install kierownik's jquery extension)
- fixed some css issues
- you can specify own css for each style

#quick_search_popup, #quick_search_popup .main-content {background: #1f537b;}

instead of

#quick_search_popup {background: #1f537b;}

It uses default link style. If you want to otherwise that style, you can do it via css:

#quick_search_popup a {color: #000}

(#000 is html color)

#quick_search_popup {
    font-family: Tahoma;
    font-size: 11px;
    padding: 3px;
    padding: 0;
    width: auto;
    min-width: 0;
    background: #1f537b;
}

So that the background color will fit my forum color scheme.

In Ie it displays correctly (except the colored "Faire une nouvelle recherche" which is kinda ugly once it has been clicked one time):

But here is the output in firefox:

I'm a css n00b so I must have made some mistake somewhere?

Is there a way to limit the quick search access to the registered users, so that the guests will only have the standard link to search.html?

And is there a way to avoid the "Perform new search" change of color once it has been clicked one time?

Changes:
- when user can't search, do nothing
- better popup styling

Download

EDIT: you mean I don't have to add the navlinks hook (<hook id="fn_generate_navlinks_end"><![CDATA[) - you didn't just forget it?

It's done in other way (using javascript)

EDIT: you mean I don't have to add the navlinks hook (<hook id="fn_generate_navlinks_end"><![CDATA[) - you didn't just forget it?

Download

nice work daris. much  appreciated!